Bassman Ten in for service
Moderators: pompeiisneaks, Colossal
Re: Bassman Ten in for service
The fuse in the amp is a 3A, back panel calls for a 2.5 Amp. I have not powered it up yet but will soon.
Re: Bassman Ten in for service
Got it fired up slowly using a variac with a light bulb current limiter. Unloaded B+ voltage is 501v and I have -45v on both pins 5 of the power tube sockets. With tubes in I get 417v on the power tube plates with 25.5 mA of current draw, everything stable over a 10 minute period so far.
ETA: The light bulb current limiter was choking the amp a bit. Plugged straight into the variac at 117v the real plate voltage is 483v with 38mA of current draw. Thats 18.5 watts per tube, or ~61% max dissipation. Perfect!